Interesting Looking Jefferson Nickels....Error or PMD?

Well, I have had these in my desk drawer for sometime. I just relocated them and figured instead of letting them sit in my drawer for another few years I should learn what they are. Every time I look at them, I can never pin point rather it's PMD or Mint Error and often flip flop between the two. Anyone else have any ideas? Thanks in advance for any advice.

 

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First 2 look like lamination errors...not sure about the last one. Perhaps a struck-through?

 

I really think the first two are lamination errors/peels.

 

First two are laminations, the third one is a severely worn die.

 

all above are correct.. the first 2 are indeed lamination's, the last one is questionable, but I would tend to agree with the worn die.. the head area almost looks like there was rust on the die itself perhaps.